Dodge Ram Truck 1500-2500-3500. Manual - part 2087
The device itself has 3 wires: Switch sense, solenoid driver and ground. It also includes a resistor to protect the switch from a short to battery or a short to ground. The NGC utilizes a high-side driver to energize and duty-cycle the solenoid.
REMOVAL
If Equipped With Horizontally Mounted EVAP Canisters